As soon as Christopher Columbus great folks arrived in the newest World Today, two biologically specific worlds comprise introduced into email. The animal, grow, and microbial longevity of these earths began to blend in a process called the Columbian trade. The outcome about this trade recast the the field of biology of both areas and transformed background of the globe.
Geologists are convinced that between 280 million and 225 million in the past, the earths before individual area cities become welded into a land named Pangaea. Over 120 million in the past, they feel, this land began to separate. That took place, the Atlantic sea developed, dividing the Americas from Africa and Eurasia.